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发明名称
DOUBLE-ARTICULATED SPRAG FOR STABILISING ROOF SUPPORTING SETS IN MINE HEADINGS
摘要
申请公布号
PL61480(Y1)
申请公布日期
2005.06.30
申请号
PL20010112070U
申请日期
2001.03.30
申请人
GLOWNY INSTYTUT GORNICTWA
发明人
KOWALSKI EDWARD;ROTKEGEL MAREK;RULKA KAZIMIERZ;SKRZYNSKI KRZYSZTOF;STALEGA STANISLAW
分类号
E21D11/28;(IPC1-7):E21D11/28
主分类号
E21D11/28
代理机构
代理人
主权项
地址
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